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Lincoln Electric SVM162-B service manual Electrical Diagrams

Models: SVM162-B

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G-14	ELECTRICAL DIAGRAMS	G-14
SCHEMATIC - CONTROL PC BOARD - ABOVE CODE 11000 (G4762 PAGE 2)

NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.

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PRECISION TIG 275

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Lincoln Electric SVM162-B service manual Electrical Diagrams

Contents

Safety Depends on You Precision TIGFor Engine SafetyPowered equipment Mar ʻ95Aug ʻ06 ARC Rays can burnFumes and Gases Iii Welding Sparks canCylinder may explode If damaged LES Machines À Souder À Précautions DE SûretéPrécautions DE Sûreté Pour Transformateur ET ÀMaster Table of Contents for ALL Sections Table of Contents Installation Section Unbalance 70% Penetration AC TIG 15.4 200 100% 28.0 InstallationUnbalance 70% Penetration AC TIG 16.1 255 60% 29.0 225 Unbalance 70% Penetration AC TIG 14.8 150Output Current Maximum OpenSelect Suitable Location Safety PrecautionsProtection Before working on this equip Turn the input power OFF atDisconnect switch or fuse box MentWork Cable Connection Figure A.2 Auxiliary Power Connections Figure A.3Robotic Interface Connection Figure A.4Return to Section TOC Table of Contents Operation Section Pipe Thawing OperationProduct Description Recommended Processes EquipmentStick mode the Electrode circuits Controls and SettingsWhen the Power Source is on Both the Stick and TIG torch cablesAC Balance Ontrol Maximum Output Control The large knobOperation for Codes Above 11000 only Menu Button and Display Switch CodesTIG Mode Menu SelectAdvanced Panel Controls Gure B.3Pulse Background Current Control Pulse Frequency ControlTime Control PULSE% on Stick Welding Features Internal SET UP ControlsTIG Welding Features Step Trigger Modes Figure B.4 TIG Weld Cycle Chart Codes below 11000 K1829-1Setup Guidelines for TIG Welding With AN Amptrol Figure B.6Smaw Process Making a TIG Weld with AN AmptrolRecommended Electrode Amperage Ranges Precision TIG Gtaw ProcessTable of Contents Magnum PTA and PTW Series Torches Accessories for Codes belowOptional Equipment Accessories for Codes Above Return to Section TOC Maintenance Component Location and AccessSafety Precautions Overload ProtectionUNDER-COOLER Service Service ProceduresSpark GAP Adjustment Warni Table of Contents Theory of Operation Section General Description Input Power CircuitTheory of Operation See SCR Operation Output RectificationControl board also monitors the thermostats High VOLTAGE/HIGH Frequency Circuit Figure E.4 High Voltage / High Frequency CircuitDC Welding Output Figure E.5 DC Welding OutputAC Welding Output Figure E.7 AC Welding OutputSCR Operation Figure E.9 SCR OperationFAN-AS-NEEDED F.A.N 8THEORY of OPERATIONE-8Protection Circuits Thermal ProtectionTable of Contents Troubleshooting & Repair Section 2TROUBLESHOOTING & REPAIRF-2 HOW to USE Troubleshooting GuideTroubleshooting & Repair Reconnect Troubleshooting GuideProcedure TestSCR Bridge Test Control BoardTransformer Perform the Protection Board Installed, remove it and replaceMachine functions normally T1 TransformerPerform the T1 Transformer See Note belowProtection Board Perform the SCR Bridge Test Perform the SCR Bridge Tests Est Perform the Gas Solenoid TestCan Kill MaintenanceElectric Shock Maintenance Section High frequency transformerSee the Maintenance Secti Problems Possible AreasSymptoms Misadjustments Course of Action To Technical SpecificationsStick Welding Problems Stick electrode blasts-off Welding current may be too highFunction Problems Installation Manual Be plugged into J3Display switch may be faulty Precision TIG Voltmeter/Ohmmeter Nut Driver Wiring Diagram 19TROUBLESHOOTING & REPAIRF-19Meter Calibration Adjustments DescriptionCalibration Check 20TROUBLESHOOTING & REPAIRF-20Meter Calibration Adjustments Control board. See Figure F1 21TROUBLESHOOTING & REPAIRF-21Ammeter Calibration Procedure Return to Section TOC Nut Driver Electrical Insulating Tape 23TROUBLESHOOTING & REPAIRF-23High Frequency Circuit Disable Procedure Procedure 24TROUBLESHOOTING & REPAIRF-24High Frequency Circuit Disable Procedure Test Description 25TROUBLESHOOTING & REPAIRF-25Protection Board Test Protection Board Test Resistance Between Reading27TROUBLESHOOTING & REPAIRF-27 T1 Main Transformer TestT1 Main Transformer Test 28TROUBLESHOOTING & REPAIRF-28Test Procedures Test Points Acceptable Voltages Primary WindingsReturn to Section TOC 31TROUBLESHOOTING & REPAIRF-31 GAS Water Solenoid TestGAS Water Solenoid Test Test ProcedureDisable Procedure Perform the High Frequency Circuit33TROUBLESHOOTING & REPAIRF-33 Static SCR TestAssembly. See SCR Bridge Assembly 34TROUBLESHOOTING & REPAIRF-34Removal and Replacement Static SCR TestService and repair Active SCR Test36TROUBLESHOOTING & REPAIRF-36 Active SCR TestActive SCR Test Figure F.9 SCR Gate Locations Scope Settings 39TROUBLESHOOTING & REPAIRF-39DC TIG Mode Typical Output Voltage Waveform Machine Loaded to 2 AmpsMilliseconds in time. The machine 40TROUBLESHOOTING & REPAIRF-40AC TIG Mode Was loaded with a resistance grid bankThis is the typical DC + output voltage 41TROUBLESHOOTING & REPAIRF-41Typical AC Voltage Waveform Machine Loaded to 50 Amps Horizontal Sweep Ms/DivAC Balance Control in Auto Output Control AT Minimum 42TROUBLESHOOTING & REPAIRF-42Typical AC Voltage Waveform Machine Loaded to 2 Amps 43TROUBLESHOOTING & REPAIRF-43 Return to Section TOC Nut Driver Phillips Head Screwdriver Off-set Wire Cutters 45TROUBLESHOOTING & REPAIRF-45High Voltage Transformer Removal and Replacement Removal Procedure 46TROUBLESHOOTING & REPAIRF-46Removal and Replacement Replacement Procedure47TROUBLESHOOTING & REPAIRF-47 Figure F.11 3/8 Screw & Leads S and F LocationsReturn to Section TOC Nut Driver Phillips Head Screwdriver Wire Cutters 49TROUBLESHOOTING & REPAIRF-49Control Board Removal and Replacement 50TROUBLESHOOTING & REPAIRF-50 Control Board Removal and Replacement51TROUBLESHOOTING & REPAIRF-51 J10 J11 J12Return to Section TOC Nut Driver Pliers Crimp Wire Cutters 53TROUBLESHOOTING & REPAIRF-53SCR Bridge Assembly Removal and Replacement See Figure F.14 54TROUBLESHOOTING & REPAIRF-54SCR Bridge Assembly Removal and Replacement SCR Bridge Removal and Replacement 25-27 300-324 10±.5 125+0/-5 22-25 Mounting of Stud Type Diodes to Aluminum Heat Sinks CONT’DDiode Stud Foot Inch Size Pounds 57TROUBLESHOOTING & REPAIRF-57 Polarity Switch Removal and Replacement58TROUBLESHOOTING & REPAIRF-58 Polarity Switch Removal and Replacement59TROUBLESHOOTING & REPAIRF-59 SCR Removal and ReplacementSpecial Instructions 60TROUBLESHOOTING & REPAIRF-60SCR Removal and Replacement Open Circuit Voltages Retest After RepairInput Idle Amps Recommended Meters for Machine Output TestsReturn to Section TOC Electrical Diagrams Section Section G Control P.C. Board SchematicElectrical Diagrams Wiring Diagram Entire Machine Code 10806 G4031Wiring Diagram Entire Machine Code 10807 G4031-1 SCR2Precision TIG 275 Wiring Diagram Wiring Diagram Entire Machine Code 10893 G4031-2Schéma DE Câblage Diagramas DE Cableado Wiring Diagram Entire Machine Code 11158 G5692Precision TIG 275 Wiring Diagram Wiring Diagram Entire Machine Code 11159 G5692-1 Robotic Interface Connection Connexion Interface RobotiqueSchematic Entire Machine below Code 11000 G4075 Return to SectionSchematic Entire Machine Above Code 11000 G5691 Change Detail Released from X A.02Schematic Control PC Board below Code 11000 G3908 Electrical Diagrams Electrical Diagrams PC Board ASSEMBLY-CONTROL below Code 11000 G3909-2 G3909Schematic Control PC Board Above Code 11000 G4762 Electrical Diagrams Electrical Diagrams Electrical Diagrams Electrical Diagrams PC Board ASSEMBLY-CONTROL Above Code 11000 G4763-1 G4763SCHEMATIC-PROTECTION P.C. Board M16115 16115 MPC Board ASSEMBLY-PROTECTION M16062-1 Reqd IdentificationSCHEMATIC-BYPASS / Stabilizer P.C. Board S22530-1 Code 10806 PC Board ASSEMBLY-BYPASS / Stabilizer L10121-1 Code 10806 L10121-1SCHEMATIC-BYPASS and CE P. C. Board S24206 Code Frame GroundPC Board ASSEMBLY-BYPASS and CE L10882-1 Code Bottom ViewSchematic TIG Option P.C. Board below Code 11000 G4039 Electrical Diagrams Return to Section TOC To Section TOC Schematic TIG Option P.C. Board Above Code 11000 G4760 Electrical Diagrams Electrical Diagrams MAK E Detail SVM Error Reporting Form